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Microstructure, Mechanical Properties, Sintering and Fracture Behavior of Ti(C, N) Based Cermets Granules/Ti(C, N) Based Cermets Composite

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Abstract:

Effect of Ti (C,N) based cermets granule on the microstructure, mechanical properties, sintering and fracture behavior of Ti (C,N) based cermets was investigated. Results show that the Ti (C,N) based cermets granules distribute in the matrix homogeneously. A nanoindentation study was performed on hard phase and binder phase in the matrix and granule. With the increase of granules content, sintering properties is worse. With the increase of granules content, transverse rupture strength (TRS) and relative density decrease gradually, while the hardness has an opposite trend. The fracture toughness increases firstly with increasing granule, and then decreases with the further increase of granules. Higher fracture toughness of the cermets is mainly owing to the crack branch and higher fracture energy of coarse granule.

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Periodical:

Key Engineering Materials (Volume 837)

Pages:

139-145

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.837.139

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Online since:

April 2020

Authors:

Ai Jun Liu*, Gang Li, Ning Liu, Ke Bei Chen, Hai Dong Yang

Keywords:

Nanoindentation, Sintering Behavior, Ti(C,N) Based Cermets Granules, Toughening Mechanism

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© 2020 Trans Tech Publications Ltd. All Rights Reserved

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